The Lake Charles echo. [volume] (Lake Charles, Parish of Calcasieu, La.) 1876-1898, 1887-11-04
POPULAR SCIENCE.

| Aprnfflinp a Or. IIucien Howe, who roha 9
paper on the increase Of BLINDNESS ~ ~ ~
/ Finifea gEttes al the last meeting o. Lle
/ American Aasociation for the Advancement en-.
/ Of Science, the population o. Lils o9 I5sG'
! Increased 30 per cent from 1870 TO Ioeni
and blindness Increased ~ 6ob PGbl mind Con
] tarinn and immigration are h8t uo"A an
! among the chief canRes,
| Hnppeninu 10 want place to strike par
| lor match to hghtR gas stove, says awe
/ in tile Chicago Journal gr COHlnteeIUe, 4
| afrF1ck the Inatch upon the stove over the gas
! The Ras LIMITED but the match ulu IoL !
| laid the match aside, and AZ the Fas-burnaeTT
was wanted used the sam same +im aSSn and The
| match Is apparently as good as ever; OAnlloS
| some one invent an improved nHnseF HUH
| this suggestion 5000.
| The experiment of fishing with electric
lamps inclosed in glass globes az lure 60 INC
| prey has not as yet proved q suCtess. a F1s-
| ssl Tins equipped recently made cruise 20
! the Isle Of Man. The lamps were sunk WIN WIN
/ the beam of the net to the depth Of 1oFJy OF
/ ffftT fathoms, the glass globe having been
| three-eighths OF an inch thick, but the pres
sure Of the water was too great Tor the gisI55s,
] which broke, and the lights went out E,A-
periments with stronger glass are to be made.
Electric heat indicators are valuable means
! of preventing spontaneous combustion, AZ
sea- They consist of Thermometers, incased
and protected by iron tubes, provided, IN 9
,ygli-knoWn manner, with platinum wires,
and connected to O system OF electric belh
and indicators on deck. These thermometers
are distributed among such dangerous car
goes as coal, cotton, etc, Liable to spoIitp-
ueOus combustion. Should any undue neat
arise in any part Of Nhe cargo, the mercury
in tine thermometers will rise, make contact
with the platinum wires, ana give an ll6lAh-
taneOus alarm on deck, at the same time IN
diCating the exact spot where SUCH danger
Gus heat may exist. j..
To make artificial ice: Take a. cylindrical
earthen vessel, pour three and one4thlrd
ounces of commercial sulphurlc acid and
one and three-quarter ounces OF water INTO
it, and then add one ounce Of powdered sui
phule Of SODA. In the centre of this mixture
place q smaller vessel containing the water TO
be frozen; then cover the vessel, and II
possible TevOlve the whole with gentle mo-
ton. II q few minutes the water IN the
small vessel will be converted to ice. The
same mixture can be uaae second or thtru
time for makinga block Of ice The opera
ton should, If possible, be performed IN a
Science en- Fd7nNe.
A remarkable secret has Just been revealed
after burial in the sea for more than thlfty-
SIX yearBi. On FEB Feb: |, 1851. su6m II, i
the harbor of kiel, where II remained in
forty feet Of water until lately discovered IN
the course of dredging operations. The CD
riOuB craft has been raised, and It's meGhan-
ism-kept secret by its inyentOr-has been
exposed to view. The boat was made Of
sheet-iFOn, and was tWenty-siX feet long ten
feet deep aud slX feet wide. The driving was
effected by means Of q three .bladed screw
worked by two large wheels, each wheel
turned by a man treading on projections on
its periphery. The bow extended upward m
q peculiarly shaped head provided with bulls
eyes closed by thick glass Sinking and
raising were effected by admitting and pump
ing out water. The boat was designed for
placing UOrpedOes under hostile vessels, aud
was successfully tested, but was, .untOrtU-
nately, crushed by the pressure of the wa
ter at a depth Of thirty feet. 1t will he re
constructed and preserved as the first ven
ture in submarine warfare,
Dr. Henry Hun has an article in the Medi-
cal Ne1us on sewer poisoning, in which be
finds that no less than thirteen classes Of dis
ease may be traced to the lnhAlGtlOn--uOFe
or less COntIHued-of the atnOgpheTc from
sewers. The list Is az follow: Omluug
and purglnE, either separate Or combined;
form OF neplllus; general debility in which
the heart IL especially involved; teyer' which
il frequently accompanied by chlllh; sore
throat whirh III frequently Of diphtheTitlC
character: urhlglA; perhaps, also, myelitis
OF the atsFlur horns; EyntUtlC diseases, such
81 typh I'D 1GVel, pneumonia, diphthOfls,
cholera, dystntery, csFeDTO-hpinHl meulu-
glilb, CTyslpelaH and scarlet fever in these
GRses undoubtedly the sewer gas merely acts
as a vehicle fol. the specific GERM; a condl-
ton Of Applying, which, in Its severe TORN,
is hArGCteTlzeu by coma, COuvulrIUnB and
collapse EUeEpeTal fever, abscsssOE, lympha-
ucuitls, acute uuTal Catarrh g. HE moral
OF alt this is look to yOlr plumbing, and be
SINE tunt there Is an escape trym ghc soil
pipes, bathrooms, closets, etc, to the eGteT-
nal mOsphaTg.-Ds6UUF ree Press.
The wonderful invention of writing by
described bV the E,'T HgR Gnsc,is: 'tOntOT
The ton If n b0y. which ia about the slgp III
IN ordinary dIsp. ten boz, pTnerutes what
has tue a,,beargtDcg Of a stVIograDnic men.
Ills hny,.ttfr. Is not ne1r, bii fEr GaI,,ije
Uf he sttra1sHlitteI. - and it, liver end j.
tiLNd to 2 night BRASS perpendicular bar. Any
muaOh gwen by the hand you hold it aust
IRt & peu--tu the handle Of the tFauHnjttfr
gtglInT1,inail Lv tIin HaT tn 40 aeI'il If
carbon disks coutuIugu Within the box, and,
etc, is car led again TO the t0p of tGc bon,
where it IL reproduced exUcdy by a small
ink holding pen, whose point Fests on a
white paper tap. \ cluclL-Nurk apparatu,
pulls TINS tape sIOng at a gentle pace: aud
after ntsle plaGuCe you lind that i ID quite
easy to move tin haadlc OF the tfangmittar
70 that the pen shall write legibly On the
moving tlpe. Nov, Whatever ia written on
the tape before yUa is ittsn simultaneously
a mile OH, OF it may be flftg InIIes OF. On n
similar tape, bya similar instrument at the
other end o. the wire The instrument Is
very compact and apparentlg efficient" Tue
can.
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MINUS WueIAst tlle popular ,holop that
9SUi i n' e commit sslifEle pc !E9s; r
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yeYv m saT,t h = ~ y ~
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aeEl1aI rpnetIaf Inn III ~ siins MI nv,
p3ison Of a Scorpion Il O5lite oygi.Tless Ia XIII
tb shTIe id itnoi ~. ano4br m IN g 'i NJ
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tba fi,i+eT AZ s;. ~ {tr ~ We stthg VIII
he found to 30 milky wiife ilIi,f. witb yei.v
sci8 ''AiS''' li'lts siA'' " teIll'c
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AZ Nh hts9l Is peihg. lhaile Dy we EeFro-
EtlehEt hoe5tl5tA' OF l,aflB' ~ the fuiloN ne
LIN " I ~ pm heS reference loa new
~ S M "h,sh y sslu 70 teq4lfe 10 hard
S4ttliE. ~ T. SS-ilp9ssa oL so56 IRON, nickel
man tS& lfEG lflGEAi or an Oxide OF II. alnmi-